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1 Fruiting heads 1-2 (-3) per peduncle; bark exposed by peeling green; lobes of leaves elongate, often longer than wide; [rarely persistent or escaped cultivar]
..2 Major lobes of leaves usually with several secondary teeth per lobe, acuminate; lower leaf surface pubescent or glabrate with age; [widespread in our region]
..2 Major lobes of leaves usually with entire margins (rarely with 1-2 scattered secondary teeth), long-acuminate; lower leaf surface always glabrous or glabrate with age; [TX, rarely adjacent states]